Nigel just seen this, I can recommend Adrians suggestion in the above post, I use this to build wheels with.
I built some with Ultegra hubs and Exal XR1 rims Sapim double butted spokes, 36 spokes 3 cross, I got the hubs free from Andrew_Culture who used to post on here but not seen any post from him for a while, they are fitted with some 23mm Planet X kevlar tyres, you can have them for what it cost me to build them £50 let me know if your interested and I'll bring them up for you to look at, also I know you like to experiment with gear ratios, I have a few cassette sprockets you can have.
They are fitted with a 10 speed Shimano freewheel.